VULNERABILITY INTELLIGENCE

CVE-2021-3847

CVSS score7.8 HIGH
EPSS probability0.46%
CISA KEVNot currently listed
Published2022-04-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

An unauthorized access to the execution of the setuid file with capabilities flaw in the Linux kernel OverlayFS subsystem was found in the way user copying a capable file from a nosuid mount into another mount. A local user could use this flaw to escalate their privileges on the system.

Weakness classification

  • secalert@redhat.com: CWE-281
  • nvd@nist.gov: CWE-281

Primary references